Let's divide 499438 by 12
The aim is to understand the frequency of 12 in 499438.

Going ahead to step 1:
12 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 12

Moving on to step 2:
12 can be fit into 49 4 times, resulting in a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 48 from 49 leaves us with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 12

Advancing to step 3:
19 divided by 12 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 41.0
Deduct 12 from 19 and we're left with 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 12

Step 4:
12 goes into 74 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 416.0
Deduct 72 from 74 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 12

Going ahead to step 5:
12 can be fit into 23 1 times, resulting in a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 4161.0
Subtracting 12 from 23 leaves us with 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 12

On to step 6:
12 can be fit into 118 9 times, resulting in a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 41619.0
Subtracting 108 from 118 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
The number 12 fits into 100 8 times, leaving a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 41619.8
Deduct 96 from 100 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 8:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 41619.83
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
40 divided by 12 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 41619.833
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 41619.833 and a remainder of 0.0004.